/* ============================================
   AI伴侣网络平台 - 前端样式
   ============================================ */

:root {
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --danger: #ef4444;
  --success: #10b981;
  --warning: #f59e0b;
  --bg: #0f172a;
  --bg-card: #1e293b;
  --bg-input: #334155;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --border: #475569;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ============================================
   布局
   ============================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header h1 {
  font-size: 20px;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-nav {
  display: flex;
  gap: 16px;
  align-items: center;
}

.header-nav a, .header-nav button {
  color: var(--text-muted);
  background: none;
  border: none;
  cursor: pointer;
  font-size: 14px;
  padding: 6px 12px;
  border-radius: 6px;
  transition: all 0.2s;
}

.header-nav a:hover, .header-nav button:hover {
  color: var(--text);
  background: var(--bg-input);
}

/* ============================================
   卡片
   ============================================ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}

.card h2 {
  font-size: 18px;
  margin-bottom: 16px;
  color: var(--text);
}

.card h3 {
  font-size: 16px;
  margin-bottom: 12px;
  color: var(--text-muted);
}

/* ============================================
   表单
   ============================================ */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
}

.form-group textarea {
  min-height: 80px;
  resize: vertical;
  font-family: inherit;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ============================================
   按钮
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--primary);
  color: white;
}
.btn-primary:hover { background: var(--primary-hover); }

.btn-danger {
  background: var(--danger);
  color: white;
}
.btn-danger:hover { opacity: 0.9; }

.btn-success {
  background: var(--success);
  color: white;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.btn-outline:hover { border-color: var(--primary); color: var(--text); }

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
}

.btn-block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ============================================
   登录/注册页面
   ============================================ */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow);
}

.auth-card h1 {
  text-align: center;
  margin-bottom: 8px;
  color: var(--primary);
}

.auth-card .subtitle {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.auth-links {
  text-align: center;
  margin-top: 20px;
  color: var(--text-muted);
  font-size: 14px;
}

/* ============================================
   仪表板
   ============================================ */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

@media (max-width: 768px) {
  .dashboard-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}

.stat-card .stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
}

.stat-card .stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ============================================
   角色列表
   ============================================ */
.character-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

.character-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  position: relative;
  transition: border-color 0.2s;
}

.character-card:hover {
  border-color: var(--primary);
}

.character-card h3 {
  margin-bottom: 8px;
}

.character-card .meta {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.character-card .description {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.5;
}

.character-card .actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* 绑定状态标签 */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 12px;
  font-weight: 500;
}

.badge-pending {
  background: rgba(245, 158, 11, 0.2);
  color: var(--warning);
}

.badge-bound {
  background: rgba(16, 185, 129, 0.2);
  color: var(--success);
}

.badge-expired {
  background: rgba(239, 68, 68, 0.2);
  color: var(--danger);
}

/* ============================================
   二维码弹窗
   ============================================ */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  max-width: 500px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow);
}

.modal h2 {
  margin-bottom: 20px;
}

.modal .qr-container {
  background: white;
  padding: 20px;
  border-radius: 8px;
  display: inline-block;
  margin: 20px 0;
}

.modal .qr-container img {
  display: block;
  max-width: 250px;
}

.modal .bind-steps {
  text-align: left;
  margin: 20px 0;
  padding: 16px;
  background: var(--bg-input);
  border-radius: 8px;
}

.modal .bind-steps ol {
  padding-left: 20px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 2;
}

.modal .bind-command {
  background: #000;
  color: #0f0;
  padding: 12px;
  border-radius: 6px;
  font-family: 'Courier New', monospace;
  font-size: 13px;
  word-break: break-all;
  margin: 12px 0;
  text-align: left;
}

/* ============================================
   订阅卡片
   ============================================ */
.subscription-plans {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.plan-card {
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
}

.plan-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
}

.plan-card.active {
  border-color: var(--success);
}

.plan-card .plan-name {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.plan-card .plan-price {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}

.plan-card .plan-period {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.plan-card .plan-features {
  text-align: left;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 2;
}

/* ============================================
   消息提示
   ============================================ */
.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 12px 20px;
  border-radius: 8px;
  color: white;
  font-size: 14px;
  z-index: 9999;
  animation: slideIn 0.3s ease;
}

.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }
.toast-info { background: var(--primary); }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ============================================
   隐藏/显示
   ============================================ */
.hidden { display: none !important; }

/* ============================================
   表格（管理员）
   ============================================ */
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th, .data-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

.data-table th {
  color: var(--text-muted);
  font-weight: 500;
  background: rgba(0,0,0,0.2);
}

.data-table tr:hover td {
  background: rgba(99, 102, 241, 0.05);
}

/* ============================================
   加载状态
   ============================================ */
.loading {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
}

.loading::after {
  content: '';
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-left: 8px;
  vertical-align: middle;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}